Don carlson

legacy part substitute for old HC05J2

Discussion created by Don carlson on Jan 31, 2008
Latest reply on Mar 17, 2008 by Jim Donelson
I have some legacy designs that use obsolete 68HC705J2 MCUs.  These are
20 pin DIP  with 2K ROM in a OTP package.  A J1 version is still around but not enough ROM...   I'd like to keep the board and kit but need replacements for this MCU.  I can't find them anywhere - even considered using an J2 SOIC with package converters  but nothing available.

Anyone know of a pin compatible part, or another MCU from that could be substituted?
Worst case, I could rewrite the 05 code and rearrange a daughterboard for another MCU, but that's alot to do.....only minor code changes need for the updates as is..

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